Royal Australian Air Force Leading Aircraftman Grady

Royal Australian Air Force Leading Aircraftman Grady Humphries, assigned to Combat Support Unit 14 and aggressor for the training, engages a tug-of-war contest with Benga, 380th Expeditionary Security Forces Squadron military working dog, age 5, during annual water-based aggression training at the base pool at an undisclosed location in Southwest Asia, Jan. 18, 2016. The purpose of the training, hosted by 380th Expeditionary Security Forces Squadron Military Working Dog Section alongside their Australian counterparts, is to familiarize military working dogs with bodies of water and encourage them to correctly perform their duties in such an environment. (U.S. Air Force photo by Staff Sgt. Kentavist P. Brackin/released)